Ask a Question forum→how much Miracle-Gro for 1.5 gallon pot of impatiens?

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tomtenn
Jun 13, 2020 9:55 AM CST
I bought a 1.5 gallon hanging pot of impatiens for my limited sun porch. The Miracle-Gro instructions say add 1/2 teaspoon to a gallon of water for indoor plants and 1 1/2 tablespoons to a gallon of water for outdoor plants.
(1) Even though it will be outdoors should I consider it an indoor plant because it's in a pot and use the 1/2 teaspoon to a gallon of water formula?
(2) How much of the gallon should I use on the plant?
(3) How often should I fertilize?
Thanks!
Tom
Name: Daisy I
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DaisyI
Jun 13, 2020 10:11 AM CST
Welcome!

The general rule is use the fertilizer at 1/2 or less strength for containerized plants so use 1/2 teaspoon per gallon. But, chances are the soil your impatiens is potted in has fertilizer. If your plant is doing fine and blooming well, I wouldn't bother with the fertilizer.
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Baja_Costero
Jun 13, 2020 11:33 AM CST
The recommended amount for Miracle Gro products is ridiculously high. The dose they recommend for outdoor use (of the granulated solid product) is 20 times higher than the dose I regularly use for my outdoor succulents in full day-long sun. So maybe try 1/2 teaspoon per gallon if you're just going to feed once, or 1/4 that amount if you'll be feeding regularly. Water until the soil is saturated and water is coming out the holes at the bottom of the pot. If you will be fertilizing regularly, make sure you flush with an excess volume of water each time so the salt does not build up in the soil. You can save the leftover fert-water in a dark, cool place if there is any, as long as you use it up within a couple of weeks.

Welcome!
[Last edited by Baja_Costero - Jun 13, 2020 11:37 AM (+)]
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TN
tomtenn
Jun 15, 2020 8:51 AM CST
Thanks Daisyl and Baja_Costero.

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